He Was the Most Prolific Sexual Predator in Japan
This Is Monsters
Jiles
4.7 • 1.9K Ratings
🗓️ 20 January 2026
⏱️ 48 minutes
🧾️ Download transcript
Summary
Episode 29 : Joji Obara
When Lucie Blackman went missing in Tokyo, her family worked tirelessly to try and find her. When the man she had been with was tracked down, investigators learned that he was the most prolific sexual predator they had ever seen.
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Transcript
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| 0:00.0 | In May of 2000, Lucy Blackman and a friend flew from London to Tokyo to make money as a nightclub |
| 0:06.8 | hostess in order to pay off debts. Even though she was only 21 at the time, Lucy had given |
| 0:12.5 | into the allure of credit cards and found herself in enough debt to make her feel hopeless |
| 0:17.2 | about ever paying it all off. She had heard that young Western women could make a lot of |
| 0:22.9 | money in Tokyo serving drinks and being friendly companions to wealthy businessmen. Her plan was to go for |
| 0:29.9 | three months, make enough money to pay off her debts, and return home with a clean slate. Unfortunately |
| 0:36.6 | for Lucy, not much went as planned after she arrived in the sprawling metropolis, |
| 0:41.6 | and it was only when she finally felt like she was finding her footing that her life was suddenly taken. |
| 0:47.2 | This is Monsters. |
| 1:18.6 | Music Joe Biden Joe Barth Joji O'Bar was born on August 10, 1952 in Osaka, Japan. His parents named him Kim Sung-Jong, which he would go on to change after his father's death. |
| 1:24.6 | His parents were Zayinichi Koreans, who were Korean by heritage, but had |
| 1:29.2 | immigrated to Japan prior to 1945 and lived there as permanent residence. His family also used |
| 1:36.8 | the Japanese surname Hoshiyama, but I'm just going to refer to him as Joggi Obara throughout |
| 1:42.1 | this story. |
| 1:44.4 | Some of the Zionichi Koreans were forced to come to Japan to fight in the war or work in |
| 1:49.0 | factories, but Joji's parents migrated to Japan voluntarily. |
| 1:54.2 | When the Japanese Empire was defeated in World War II, the Koreans in Japan who had previously |
| 1:59.4 | not held the same rights as Japanese citizens |
| 2:01.9 | were suddenly liberated from their conscriptions and many returned to Korea. |
| 2:07.3 | Jogi's father, Kim Kiohok, stayed in Japan and began investing in businesses. |
| 2:13.0 | He had a taxi company and some pay parking lots, then he started opening Pachinko parlors. |
| 2:19.2 | Pachinko is a gaming machine that can be used for gambling and is extremely popular in Japan. |
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